document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1087707>Question 1087707</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You have a 25&#8203;-mile commute into work. Since you leave very&#8203; early, the trip going to work is easier than the trip home. You can travel to work in the same time that it takes for you to make it 20 miles on the trip back home. Your average speed coming home is 2 miles per hour slower than your average speed going to work. What is your average speed going to&#8203; work? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #702027 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=702027\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r, speed going<BR>\n" );
document.write( "r-2, speed to go back home<BR>\n" );
document.write( "t, the time going to work\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28rt=25%2C%28r-2%29t=20%29 ALIGN=MIDDLE  ALT=\"system%28rt=25%2C%28r-2%29t=20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "-<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rt-2t=20 ALIGN=MIDDLE  ALT=\"rt-2t=20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25-2t=20 ALIGN=MIDDLE  ALT=\"25-2t=20\"   DISABLED_style= \"max-width:90%; height:auto;\" >, using substitution from \"going to\" equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2t=-5 ALIGN=MIDDLE  ALT=\"-2t=-5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=5%2F2 ALIGN=MIDDLE  ALT=\"t=5%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rt=25 ALIGN=MIDDLE  ALT=\"rt=25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=25%2Ft ALIGN=MIDDLE  ALT=\"r=25%2Ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=25%2F%282.5%29 ALIGN=MIDDLE  ALT=\"r=25%2F%282.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28r=10%29 ALIGN=MIDDLE  ALT=\"highlight%28r=10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "---------\r<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "                RATE     TIME     DISTANCE\r\n" );
document.write( "GOING           r         t        rt=25\r\n" );
document.write( "BACK HOME       r-2       t         20\r\n" );
document.write( "</PRE>\r<BR>\n" );
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document.write( "Basic Travel Rate Rule, RT=D:<BR>\n" );
document.write( "System,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28rt=25%2C%28r-2%29%2At=20%29 ALIGN=MIDDLE  ALT=\"system%28rt=25%2C%28r-2%29%2At=20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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